Alternative titles and symbols : Chromosome 17p11.2 duplication syndrome;
Description : Potocki-Lupski syndrome is a developmental disorder characterized by hypotonia, failure
to thrive, mental retardation, pervasive developmental disorders, and congenital anomalies.
All reported cases have occurred sporadically without bias in the parental origin
of rearrangements. Most duplications are 3.7 Mb in size and only identifiable by array
comparative genomic hybridization (CGH) analysis. Approximately 60% of PTLS patients
harbor a microduplication of chromosome 17p11.2 reciprocal to the common recurrent
3.7-Mb microdeletion in SMS (summary by Shchelochkov et al., 2010).;
Inheritance : Isolated cases;
Molecular basis : Caused by interstitial duplication (3.7Mb) of 17p11.2;